	function ajaxRead(sUrl,callback,data){
		var xmlObj = null;
		if(window.XMLHttpRequest){
			xmlObj = new XMLHttpRequest();
		} else if(window.ActiveXObject){
			xmlObj = new ActiveXObject("Microsoft.XMLHTTP");
		} else {
			return;
		}
		xmlObj.onreadystatechange = function(){
										if(xmlObj.readyState == 4){
											callback(xmlObj);
										}
									};
		
		xmlObj.open('GET', sUrl, true);
		if(typeof data != 'undefined'){
			xmlObj.send(data);
		} else{
			xmlObj.send(null);
		}
	
	}